Will an Ability Capsule change a Pokémon's Hidden Ability to it's regular ability? For example, could I use an Ability Capsule on my Infiltrator Chandelure to get Flash Fire?
The Ability Capsule can only be used on a Pokémon that belongs to a species that has two standard Abilities. For example, it can be used to change a Pidgey's Ability from Keen Eye to Tangled Feet (or vice versa), but it cannot be used on a Pikachu (whose standard Ability is always Static). It also cannot be used to change a Pokémon to or from its species's Hidden Ability. -Bulbapedia
Unfortunately if you're dealing with Hidden Abilities, you're out of luck with changing it :(
